static private Rhino.Geometry.Brep SplitClosedFaces(Rhino.Geometry.Brep brep, double tolerance)
{
Brep brepToSplit = null;
while (brepToSplit != brep && brep != null)
{
brep.Standardize();
brepToSplit = brep;
foreach (var face in brepToSplit.Faces)
{
face.ShrinkFace(BrepFace.ShrinkDisableSide.ShrinkAllSides);
var splittersU = face.IsClosed(0) ? face.TrimAwareIsoCurve(1, face.Domain(0).Mid) : null;
var splittersV = face.IsClosed(1) ? face.TrimAwareIsoCurve(0, face.Domain(1).Mid) : null;
var splittersULength = (splittersU?.Length).GetValueOrDefault();
var splittersVLength = (splittersV?.Length).GetValueOrDefault();
var splittersLength = splittersULength + splittersVLength;
if (splittersLength > 0)
{
var splitters = new Rhino.Geometry.Curve[splittersLength];
splittersU?.CopyTo(splitters, 0);
splittersV?.CopyTo(splitters, splittersULength);
brep = face.Split(splitters, tolerance);
if (brep == null || brep.Faces.Count == brepToSplit.Faces.Count)
{
return(null);
}
}
}
}
return(brep);
}
static private Rhino.Geometry.Brep SplitClosedFaces(Rhino.Geometry.Brep brep)
{
Brep brepToSplit = null;
while (brepToSplit != brep && brep != null)
{
brep.Standardize();
brepToSplit = brep;
foreach (var face in brepToSplit.Faces)
{
face.ShrinkFace(BrepFace.ShrinkDisableSide.ShrinkAllSides);
var face_IsClosed = new bool[2];
var splitters = new List <Rhino.Geometry.Curve>();
// Compute splitters at C2
for (int d = 0; d < 2; d++)
{
face_IsClosed[d] = face.IsClosed(d);
var domain = face.Domain(d);
var t = domain.Min;
while (face.GetNextDiscontinuity(d, Continuity.C2_continuous, t, domain.Max, out t))
{
splitters.AddRange(face.TrimAwareIsoCurve((d == 0) ? 1 : 0, t));
face_IsClosed[d] = false;
}
}
if (face_IsClosed[0])
{
splitters.AddRange(face.TrimAwareIsoCurve(1, face.Domain(0).Mid));
}
if (face_IsClosed[1])
{
splitters.AddRange(face.TrimAwareIsoCurve(0, face.Domain(1).Mid));
}
if (splitters.Count > 0)
{
brep = face.Split(splitters, Revit.ShortCurveTolerance);
if (brep == null)
{
return(null);
}
if (brep.Faces.Count != brepToSplit.Faces.Count)
{
break; // try again until no face is splitted
}
// Split was ok but no new faces were created for tolerance reasons
// Too near from the limits.
brep = brepToSplit;
}
}
}
return(brep);
}